load-data.py should exit if a bash command returns a non-zero error code.
load-data.py should exit if a bash command returns a non-zero error code.

Change-Id: I2f732a276a42d2697fa55bce0f18ac89e9a6f0a1
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1397
Reviewed-by: Lenni Kuff <724b7df200764f5dc1b723c05ee6c6adabd11bb1@cloudera.com>
Tested-by: jenkins

gistic/PublicSpatialImpala,rampage644/impala-cut,placrosse/ImpalaToGo,rampage644/impala-cut,rampage644/impala-cut,AtScaleInc/Impala,AtScaleInc/Impala,andybab/Impala,rampage644/impala-cut,andybab/Impala,gistic/PublicSpatialImpala,ImpalaToGo/ImpalaToGo,placrosse/ImpalaToGo,ImpalaToGo/ImpalaToGo,placrosse/ImpalaToGo,gistic/PublicSpatialImpala,gistic/PublicSpatialImpala,ImpalaToGo/ImpalaToGo,gistic/PublicSpatialImpala,andybab/Impala,andybab/Impala,ImpalaToGo/ImpalaToGo,gistic/PublicSpatialImpala,rampage644/impala-cut,AtScaleInc/Impala,placrosse/ImpalaToGo,AtScaleInc/Impala,ImpalaToGo/ImpalaToGo,placrosse/ImpalaToGo,ImpalaToGo/ImpalaToGo,placrosse/ImpalaToGo,AtScaleInc/Impala,rampage644/impala-cut,andybab/Impala,andybab/Impala,AtScaleInc/Impala